<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			li{
				background-color: #00BFFF;
				width: 100px;
				height: 100px;
				margin-top: 10px;
			}
		</style>
	</head>
	<body>
		<ul id="box">
				<li>1</li>
				<li>2</li>
		</ul>
	</body>
	<script type="text/javascript">
		var box = document.getElementById('box')
		box.onclick = function(e){
			e = e || event;
			console.log(e.target === box); //false
			console.log(e.currentTarget === box); //true
		}
	</script>
</html>
